Abstract: A fuse housing assembly and a fuse kit are provided. The fuse housing assembly and the fuse kit are configured to allow for fuses having terminals of different sizes to be mounted onto a circuit board. The fuse housing assembly and the fuse kit include a spacer configured to protect the exposed portions of the fuse terminals from the environment and prevent the proximal ends of the fuse terminals from breaking the fuse elements. Further, the spacer retains the fuse body of the respective fuses and the fuse terminals in a fixed position relative to each other so as to prevent the fuse terminals from being bent.

Abstract: A fuse employing a plurality of tuning fork terminal configurations with an improved current capacity within a smaller footprint and a housing design to provide the terminals with insert protection and strain relief.

Abstract: Approaches herein provide a fuse assembly including a multi-part symmetrical housing. In some embodiments, the fuse assembly includes a core having a set of fusible elements extending between a first end fitting and a second end fitting, and a housing surrounding the core. The housing may include a first section having a first wall defining a first internal cavity, the first wall including a first slot and a first ridge, and a second section coupled to the first section, the second section having a second wall defining a second internal cavity. The second wall may include a second slot and a second ridge, wherein the first slot engages the second ridge and the second slot engages the first ridge. In some embodiments, the first and second sections define a set of openings for the first and second end fittings to extend therethrough.

Abstract: A pyrotechnic circuit protection system includes a first connection terminal, a second connection terminal and a plurality of pyrotechnic modules connected between the first and second connection terminals. Each of the pyrotechnic modules includes a nonconductive housing and electrical connectors facilitating plug-in connection of the pyrotechnic modules to one another. A single control module may control and coordinate a plurality of pyrotechnic disconnect modules.

Abstract: The present invention provides a housing, fuse, and fuse box, with which it is possible to differentiate a multi-pole fusible link and prevent misassembly, while holding down costs. This housing is attached to a multi-pole fusible link contained within a containing part of a fuse box, and is provided with misassembly-preventing protrusions which are removable according to the type of multi-pole fusible link, the locations of the misassembly-preventing protrusions corresponding to the locations of recesses which are provided to the containing part that is to contain the multi-pole fusible link, and in which the misassembly-preventing protrusions can be contained.

Abstract: A mounting structure of an electronic component includes an electronic component, a housing member, a counterpart terminal, and at least one locking mechanism. The electronic component includes: an electronic component main body; a housing formed by assembling a casing member in which a chamber for the electronic component main body is formed and a base member to which the electronic component main body is attached; and a terminal exposed from the chamber to outside of the housing. The housing member includes a housing space including: a first chamber that accommodates the housing; and a second chamber that accommodates a terminal. The counterpart terminal is fitted into the second chamber and electrically coupled to the terminal. The locking mechanism maintains the accommodation state of the electronic component to the housing member by engaging a first engaging part and a second engaging part.

Abstract: An electrical power storage unit for motor vehicles, having a housing comprising an electrical battery cell pack in a first housing section and an electrical circuit therefor in a second housing section separated from the first housing section and separately openable, wherein the second housing section has at least one separated and independently openable maintenance region, which—with the exception of an optional contact-protected high-voltage fuse—does not comprise any electrical circuit components operating above a predetermined low-voltage limit, preferably 60 V DC.

Abstract: A manufacturing method of a complex type fusible link. The manufacturing method includes hollowing out a metal plate into a link-like conductor including a connecting plate and a terminal, cutting out the link-like conductor so as to separate the connecting plate and the terminal, forming, by insert molding, a block base including a cavity after setting the connecting plate and the terminal in a mold, and directly connecting a fusible element to an exposed portion of the connecting plate and an exposed portion of the terminal.

Abstract: A fuse holder, particularly for interlocked sockets and electrical apparatuses in general, includes a tray which is inserted in a seat and is adapted to accommodate a fuse. The tray is movable along a rectilinear path, having at least two positions: an active position, in which the fuse is active, and an extracted position, in which the fuse can be removed from the tray. The seat includes two elastic contact members which provide an electrical and mechanical connection of the fuse in the active position.

Abstract: Radial fuses for protecting an electrical circuit include a nonconductive base provided with inverted flat faces sloped obliquely relative to one another that define a wider receiving area for installation of a fuse element. Restricted freedom of movement of the fuse element is accomplished, and greater fuse reliability is ensured.

Abstract: A plug with a replaceable fuse is provided. The plug includes an outer housing, an inner core, a pair of prongs and a pair of conductive cords. The outer housing includes a fuse uninstall button opening and an inner core install opening. The inner core is installed into the outer housing through the inner core install opening, and the inner core includes a fuse socket and a fuse uninstall button. The fuse socket has an uninstall opening. When it is intended to replace the fuse, the fuse uninstall button is pressed from the fuse uninstall button opening, the fuse is ejected or pushed out of the fuse socket by one end of the fuse uninstall button extending to the uninstall opening. When the fuse uninstall button is not pressed, the fuse uninstall button restores to the original position, such that a new fuse is installed into the fuse socket.

Abstract: A fuse comprises a housing assembly, at least one primary fuse link extending within the housing assembly, at least a pair of fuse terminals connected to the primary fuse link and extending from the housing assembly, and a retractable handle assembly coupled to the housing assembly. The handle assists in removal of the fuse from a switch housing assembly.

Abstract: A fused disconnect switch includes at least one switch housing assembly having a housing defining a fuse receptacle and first and second terminal contact assemblies extending therefrom. At least one of the first and second contact assemblies is a bullet contact assembly, and a retractable fuse is received within the fuse receptacle. The fuse includes a primary fuse link and an open fuse indication device.

Abstract: A fuse circuit (11) having a plurality of terminals (22, 23) provided on a common joint plate (21) and a fuse circuit (11′) having a plurality of terminals (22′, 23′) provided on a common joint plate (21′) are incorporated into a housing (12), thereby constituting a fuse link assembly (10). The plurality of fuse circuits (11, 11′) are provided with circuit connection portions (27, 27′) which share a power input portion. The fuse circuits (11, 11′) are incorporated into the housing (12) in parallel. As a result, the number of circuits is increased, by means of only enlargement of widthwise direction Y which is easy to increase while enlargement of longitudinal direction X stemming from packaging of circuits is minimized.

Abstract: An electrical safety connector fuse for insertion into a two- or three-pin electrical socket comprises a sealed, tamper-proof housing having live and neutral apertures, and live and neutral receptacles for receiving the prongs of a plug, live and neutral prongs for insertion into the socket, and a fuse disposed within the housing. The connector fuse desirably has an internal light which lights up when the fuse is connected to a live socket, a blocking member or gate to prevent a user from receiving an electric shock by inserting objects into the live aperture of the fuse, and an insulting coating on at least a part of the live prong to prevent electric shocks as the fuse is inserted into a socket.

Abstract: A fuseholder includes a main housing configured for receiving a plurality of cartridge fuses, a fuse drawer configured for slidable insertion into the main housing, and a handle coupled to the drawer for opening the drawer to release fuses from the main housing. The drawer includes a retractable handle that is substantially flush with the drawer when the drawer is closed. A handle recess is located adjacent the drawer for prying the handle open with a tool. A drawer frame includes a lock opening therethrough for a lock member to prevent closing of the fuse drawer as desired. Built-in fuse rejection members are included in the main housing to prevent use of incorrect fuses with the fuseholder and an auxiliary contact actuator is provided for added features on an as needed basis.

Abstract: A blade fuse holder configured to have a reduced overall height. The blade fuse holder has a housing that accommodates a pair of contacts. The pair of contacts each has a pair of opposing contact arms that extend from a base part. The pair of opposing contact arms each has a contact projection in a position corresponding to a cut-out formed in the base part so that a distal end of a blade fuse that has been inserted between the pair of opposing contact arms is received in the cut-out.

Abstract: A plug-in fuse 200 comprises a body 201 with side indented portions 203 which allow secure gripping by the thumb and finger of a hand. The side indented portions define upper and lower extended portions 319, 321 allowing insertion and retraction forces to be exerted on the fuse. The improved body shape allows quick and easy insertion of the fuse in high-density fuse holders. A temperature-responsive material 323 in close proximity to the burnout portion of the fuse element provides visual and/or tactile indication of fuse condition.

Abstract: The fuse block extenders are made up of a shell (10), (10a), (10b), (10c), (10d), (10e) enclosing a bus electrode (11), circuit electrode (12), (12a), electrode base(s) (13), (13a), (13b) and accessory electrode(s) (17), (17a), (17b), (17c). Some models have a detachable cover (21) and attached cover (21a), (21b), (21c), (21d) for the accessory electrodes. The bus electrode and circuit electrodes mate with complementary fuse block electrodes of appropriate capacities and shape and the accessory electrodes connect to the electrodes of accessory circuits.

Abstract: A fused disconnect switch assembly includes a switch housing assembly and a pull out fuse assembly. The switch housing assembly includes a housing defining a fuse receptacle, first and second terminal contacts within the housing and located adjacent the fuse receptacle, and an alarm terminal extending from the fuse receptacle to an exterior of the fuse housing. The pull out fuse assembly includes a housing, a line side terminal extending from the housing, a load side terminal extending from the housing, and a primary fuse having first and second conductive end caps. The fuse end caps are coupled to respective line side and load side terminals of the pull out fuse assembly housing, and the first and second terminal contacts of the switch housing assembly receive the load side and the line side terminal blades of the pull out fuse assembly.

Abstract: A multielectrode type fuse element manufactured by forming a shallow shaving portion 1 of a definite width in the long fuse material 9 in a longitudinal direction so as to form a thin area 2, punching from portions of the thin area 2 dependently on electrical conduction capacities of fuses so as to form a plurality of blowout portions 3, 3, forming a hook-like extending portion 6 on one side across the thin area 2 at an upper end of an input terminal 4 disposed in a direction perpendicular to the longitudinal direction of the long fuse material 9, forming a plurality of output terminals 5, 5 by punching from the long fuse material on a side of the hook-like extending portion 6 of the input terminal 4 in parallel with the input terminal 4 at an equal pitch, and forming the blowout portions 3, 3 to connect one side of an upper portion of a vertical section of the input terminal 4 and a lower tip of the hook-like extending portion 6 with top end of the plurality of output terminals 5, 5.

Abstract: The invention disclosed an improved structure for combination type fusible plugs, comprising a shell and two individual plug seats that can respectively combine with conductor copper blades, fuses, and electrical wires and then be housed inside the shell to form a complete fusible plug. With an effective separation of electrical wires, conductor copper blades, and fuses from each other, the plug structure of the invention can provide more safety in use.

Abstract: A secondary short preventing mechanism of a fuse is constituted by a pair of female terminal members in which male terminal receiving portions are formed at their longitudinally one ends respectively so that the male terminal receiving portions are to be engaged with and electrically connected to male terminal portions, and a fuse fusing portion is formed between their longitudinally other ends connected to each other; and a housing for housing the female terminal portions, and having a vertically extending insulation partition for horizontally separating the female terminal portions from each other. Each of the male terminal receiving portions has raised pressing contact portions which face each other at different levels, that is, at upper and lower positions in its longitudinal direction, the upper pressing contact portion being projected toward the insulation partition and having elasticity, respectively.

Abstract: A service plug includes a circuit accommodating body that has circuit terminals internally arranged therein, the circuit terminals being connected to end portions of an open electric circuit; and a plug main body that has a fuse and that is fitted with the circuit accommodating body. The plug main body has a pair of terminals that are electrically connected to fuse terminals of the fuse and that are engageable with the circuit terminals, respectively.

Abstract: An improved fuse plug is provided. The fuse plug includes a housing, a pair of first and second fuse chambers formed in opposite side of the housing, a first blade directly connected with a first cord, a second blade indirectly connected with a second cord via a cartridge fuse disposed in the first fuse chamber, a stand-in cartridge fuse reserved in the second fuse chamber and both the fuse chambers are closed by a pair of waterproof safety fuse doors. A sleeve member made in conforming with the housing is sleeved on the housing and a fuse pick which is made from flexible plastic wraps on the cartridge fuse for facilitating a ready removal of the fuses from the chambers.

Abstract: For providing a fuse element for slow-blow fuses which uses no separate endothermic member, a fuse element for slow-blow fuses in which wings are formed on both sides of slender element portions connecting top ends of a pair of female terminals by way of narrow and short bridges by punching out of a single electrically conductive sheet.

Abstract: A fuse element which includes a substantially beltlike fusible body for electrically connecting a pair of connecting terminal portions to each other, the connecting terminal portions connected to an electric circuit, a low-melting-point metal piece clamped and fixed onto a melting metal adding portion arranged on the fusible body in order to adjust a fusion characteristic of the fusible body, and a pair of clamping pieces formed to extend outward from both side edges of the melting metal adding portion of the fusible body for clamping and fixing the low-melting-point metal piece set on the melting metal adding portion from both sides of the low-melting-point metal piece, in which the pair of clamping pieces have projections for holding the low-melting-point metal piece in press contact with each other by projecting into a space defined by a width of the melting metal adding portion when the clamping pieces are upwardly bent from both sides of the melting metal adding portion.

Abstract: A female fuse assembly has a fuse housing, and first and second fuse-link terminals. Each fuse-link terminal includes a clip-receiving portion, and first and second clip abutments. The female fuse assembly also includes a fuse link connected between the first and second fuse-link terminals. The first and second female clips each include a clip body for operative engagement with the respective first and second fuse-link terminals. The first and second clips each also including first and second arm-connecting extensions, and first and second arms. The first and second arm-connecting extensions of the first clip are engaged with the respective first and second clip abutments of the first and second fuse-link terminals. The first and second arms of each first and second clip each have a first and a second branch.

Abstract: An output stage of an amplifier contains N-channel high-side and low-side transistors for producing an output current. The gate drive circuitry for the transistors includes an N-channel transistor having its gate connected in common with the gate of the low-side transistor to the output of a high-gain input stage amplifier, and having its drain connected to the gate of the high-side transistor. This structure reduces distortion at the crossover between positive and negative output voltages and improves control of the quiescent current. Avoiding a P-channel low-side transistor also reduces the area required for the amplifier on an IC chip and eliminates clipping during negative swings of the output voltage. A capacitive coupling stage is used to prevent clipping during positive swings of the output voltage. When the gate drive for the high-side transistor goes low, a capacitor charges through a diode.

Abstract: Disclosed is a safety plug for electrical appliances and mainly includes an upper casing, a lower casing, two pole pins, a cylindrical cartridge fuse and a fuse terminal. The upper casing and the lower casing are slidably and detachably connected with each other by engagement of teeth provided at inner side walls of the upper casing and retaining hooks provided at outer side walls of the lower casing. One of the pole pins is provided at its rear end with an arcuated wrapping conductor to fitly and firmly wrap around a lower half of a first end of the cartridge fuse. The fuse terminal is provided with an .OMEGA.-shaped wrapping conductor to fitly and firmly wrap around a lower half of a second end of the cartridge fuse. These arrangements allow the cartridge fuse to correctly sense the current passing therethrough and the fuse wire in the cartridge fuse to be burned out at overload.

Abstract: A plug-in fuse device can be handled without special tools and permits convenient replacement of a burnt-out fuse element. The device has a rigid housing with a pair of plug portions. Each plug portion is shaped to plug into a socket and carries a fuse assembly which includes a pair of terminals for engagement with socket elements, a fuse element between the terminals, and a pair of conductive contacts. The terminals extend from one end surface of the plug portion, and the contacts are located at an axially opposite end surface. The plug portions are connected at their contact-bearing surfaces, and the terminals of one plug portion extend in one axial direction and the terminals of the other plug portion, in the opposite axial direction. The plug portions are also offset to different sides of the general plane of the housing. Thus, when either plug portion is plugged into the socket, its contact-bearing surface is available for continuity testing.

Abstract: An inexpensive delay-breaking fuse which assures that when an electric current having an intensity in excess of a value representing a steady-state current such as a motor lock electric current or the like flows through the delay-breaking fuse, durability of the fuse is left unchanged, a stable prearching time/current characteristic is maintained, and moreover, there does not arise a malfunction that a housing is thermally deformed or the color of the housing is changed to other one. The delay-breaking fuse includes a fuse element having a pair of female terminal portions arranged on the opposite sides thereof with an electrical conductive melting portion having a reduced width bridged therebetween with a melting/breaking part located at the intermediate position of the electrical conductive melting portion.

Abstract: Blade type plug-in fuse for high nominal currents.It is of the type comprising a case (1) in which is partially housed a conductive unit (5, 6, 9, 10) provided with two flat connection terminal blades (5, 6) whose free ends (7) are situated outside the case, said connection terminal blades being connected inside the case by a flat fuse link part (8) on at least one side and substantially in the center of which is deposited a drop of metal (13) of predetermined area of contact, and it is characterized in that the fuse link part comprises a central gauging zone (9) of width (l.sub.1) smaller than the width (l.sub.2) of the adjacent lateral zones (21) connecting with the connection terminal blades, the area of contact (31) of said drop (13) being at least greater than half the area of the gauging zone (9).

Abstract: A tap-in blade fuse is disclosed. A first embodiment comprises a plastic transparent body with two terminal blades on one side for use with an electrical fuse panel/box in an automobile. The other side of the body has an accessory blade extending from the body with a through-hole in the the accessory blade for allowing a wire connection to pass through the hole for connection to automobile accessories. All the blades arc connected together with visible fuse links. A second embodiment further includes a panel shaped insulator which separates the fuse links within the body.

Abstract: The electrical blade fuse is sealed at both the bottom and the top so that the fuse material, once melted, cannot become dislodged to short out other electrical circuits or to short out the terminals of the fuse itself. A cap of the fuse encloses the fuse cavity and is maintained in position by utilizing tab portions of the fuse terminals which are deformed to hold the cap in place, and additionally to serve as test electrodes to allow testing of the fuse in place.

Abstract: A fuse for handling normal load currents substantially in excess of about 80 amps, the fuse comprising a metal portion formed of an integral piece of metal having outermost, spaced terminal-forming portions with bolt-anchoring holes therein and a fuse link-forming intermediate portion between the terminal-forming portions. The terminal-forming portions of the metal piece has a rectangular configuration having inner margins spaced from one another. The fuse link-forming portion of the metal piece has an S-shape with one face thereof being co-planar with one of the faces of the terminal-forming portions thereof. The thickness of the S-shaped fuse link is only a fraction of the thickness of the terminal thickness and has outermost legs respectively extending from the opposite sides of the innermost margins of the terminal-forming portions of the metal piece and a central link interconnecting the outermost legs.

Abstract: A subminiature fuse has a housing in which more than one enclosed arc-extinguishing chambers are in series provided with partitions inbetween and one or more than one small hole communicating with the more than one arc-extinguishing chambers in series are provided at the respective partitions, a pair of lead terminals being fixed to the housing in such a manner as the respective fuse wire connecting portions of the lead terminals are accommodated in the respective opposite end arc-extinguishing chambers and the portions of a pair of lead terminals for connection with an external circuit are projected out of the housing, a fuse wire being extended between the fuse wire connecting portions of the pair of lead terminals through the small hole of the respective partitions, the opposite ends of the fuse wire being electrically and mechanically connected respectively to the pair of the lead terminals, whereby the fuse is capable of providing a high breaking characteristics and quickly melting to sever the fuse wire

Abstract: An electrical fuse assembly has a dielectric housing and a fuse terminal which is stamped and formed from metal stock having the appropriate electrical characteristics. The fuse terminal has blade portions which are made from metal stock which has been folded over, to provide the blade portions with the strength characteristics required. Support members are also provided on the fuse terminal. The support members cooperate with cooperation surfaces to insure that the fuse terminal is properly positioned in the housing of the assembly. During the manufacture of fuse assembly a positioning bar extends between respective conductors. The positioning bar provides the structural support required to insure that the conductors are maintained in space relationship. After the conductors are partially inserted into the housing, a portion of the positioning bar is removed to provide a stop means which cooperates with the housing of the fuse assembly.

Abstract: A connector for tapping power from a flat blade miniature plug-in fuse which includes a clamp which is of a size to engage the top portion of the fuse and an electrical terminal element which is carried by the clamp so as to be selectively urged into electrical contact with a portion of a fuse blade oriented within the body of the fuse.

Abstract: An automotive fuse is provided that allows connection of an external electrical device. The fuse has a hollow housing into which fit two electrical contacts, both having a conventional flat connector on one end. One of the contacts has a female spade type connector at its other end which is accessible by a male spade type connector through an aperture in the housing. The advantage is that it is not necessary to use an adaptor in order to make an external electrical connection.

Abstract: An electrically tappable miniature fuse which includes a housing from which the first ends of a pair of parallel blade terminals extend for engaging the contact elements in a fuse box or panel and where in at least one of the blade terminals includes a second end which is freely accessible either within, or which extends from, the housing remote from the first end thereof so as to permit an electrical connector to be selectively engagable therewith.

Abstract: An automobile fuse (10) for use in extreme temperature conditions such as the engine compartment of an automobile. Fuse (10) is a blade-type fuse with loads (42, 44) on fusible element (40) providing time delay characteristics to match the insulation damage curves of small diameter automobile cable harnesses. The lower portions of terminals (20) and (30) have been selectively plated with silver. The outer housing (50) has been laser etched.

Abstract: Miniature plug-in fuses which include a first active pair of generally parallel blade contact elements which are connected by a first fuse link and a second spare pair of generally parallel blade contact elements which are oriented oppositely of the first pair of blade elements and are electrically insulated therefrom so that when the first fuse link is interrupted due to an overload in an electrical circuit, the plug-in fuse is reversed so that the second pair of blade contact elements and second fuse link provide a spare fuse of the same amperage rating.

Abstract: A subminiature fuse comprising two terminals, a substrate, a fusible conductor, ceramic coating, a second coating and a unitary housing. A ceramic substrate 80 plated at both ends is inserted into fingers (70) in terminal, a fusible wire element 10 is strung between the fingers (70) and (20, 30) and electrically connects the terminal (20, 30). The assembly 160 is encased in a ceramic adhesive 180 which is encased in a second material (200) with superior dielectric properties. The ceramic encased assembly is enclosed in a unitary housing by injection molding.

Abstract: A fuse terminal comprising a fusible conductor formed of a Cu alloy having a conductivity of 20--less than 60% (IACS), the fusible conductor being formed with a narrow fuse portion at an intermediate position, and a pair of connection terminals formed at both ends of the fusible conductor and arranged in opposed relation with each other by bending the fusible conductor at both end portions thereof in a gantry fashion. The terminal is characterized by a surface area of the fusible conductor which is 1/8-1/2 of that of the connection terminals.

Abstract: Small plug-in electrical fuses, e.g., for automotive use are formed with a fusible link portion which is partially cut but with the walls of the cut in substantial electrical contact with each other and opposite ends of each link rigidly supported. Initial heating of the link due to current flow in excess of the fuse rating causes bending of the link to open the cut, reducing the available cross-section for current flow and therefore greatly shortening the time necessary to open the link and minimizing the total heat generated in the process.

Abstract: An automotive blade-type fuse has an enlarged transparent extraction flange. The flange is configured as a thin-wall structure having a cavity therein running substantially its entire length. The fuse terminal blades are captively secured in a housing to extend from the bottom thereof and have narrow extensions at the outer edges of the blades which extend upwardly into the flange cavity. A fuse link extends between the blade extensions within the cavity and at a stand-off distance from the interior walls of the cavity. The fuse housing is preferably of identical half-shell construction having lengthwise-running centering ribs and associated mating recesses to facilitate assembly.

Abstract: A sub-miniature fuse comprises a plastic base, and two conductors passing through the base and being bridged by a fuse wire soldered to the conductors. For obtaining a reliable fixture of the fuse wire to the conductors a fuse wire holder is formed on each of these conductors above the base and the connection between said holder and the fuse wire positioned in the latter is secured by melting on soft solder material. It is particularly advantageous to construct the holder by rolling up or bending over the upper end of each conductor.

Abstract: A subminiature fuse is disclosed comprising two terminals, a substrate, a fusible conductor, and a unitary housing. The unitary housing is sealed and provides increased mechanical strength, thus reducing the risk of a catastrophic failure of the fuse. The upper portion of the fuse terminals are shaped into finger like projections adaptable to mechanically fastening the fusible conductor and the substrate thereto thus facilitating the manufacturing process. In one embodiment the fusible conductor and adjacent portions of the terminals and substrate are coated with a ceramic coating or adhesive. The housing is sealed by ultrasonic welding or preferably in an insert molded plastic enclosure which is substantially devoid of air.

Abstract: A subminiature fuse is disclosed comprising two terminals, a substrate, a fusible conductor, and a unitary housing. The unitary housing is sealed and provides increased mechanical strength, thus reducing the risk of a catastrophic failure of the fuse. The upper portion of the fuse terminals are shaped into finger like projections adaptable to mechanically fastening the fusible conductor and the substrate thereto thus facilitating the manufacturing process. In one embodiment the fusible conductor and adjacent portions of the terminals and substrate are coated with a ceramic coating or adhesive. The housing is sealed by utrasonic welding or preferably in an insert molded plastic enclosure which is substantially devoid of air.